The present invention relates to a cosmetic composition in the form of a water-in-oil or oil-in-water emulsion comprising: a) a continuous phase b) a dispersed phase and c) particles having a number-average particle size of 200 nm or more, which are surf ace- treated with at least one amphiphilic agent, wherein the particles are present at the interface between the continuous phase and the dispersed phases, and the composition optionally comprises at least one emulsifier in an amount of 1 wt% or less relative to the total weight of- the composition.本発明は、a)連続相、b)分散相、及びc)数平均粒径が200nm以上であり、少なくとも1種の両親媒性物質で表面処理されている粒子を含む油中水エマルジョン又は水中油エマルジョンの形態の化粧品組成物であって、前記粒子が連続相と分散相との間の界面に存在し、かつ少なくとも1種の乳化剤を前記組成物の総重量に対して1重量%以下の量で含んでもよい化粧品組成物に関する。